Add a false return grille cut an access hole in the ceiling of the first floor in a central area to gain access to the ducts.
Ducts access for second floor.
This duct extends up to the second floor where it often lines up with an interior hallway wall.
Of course this means that your second floor has not yet sufficiently cooled.
Here are several ways to access ducts.
Most installers report they can get to a 100 sq.
Often you can collect the ceiling air through a network of flexible pipes in an attic.
This is one reason why your first floor is so much cooler than the second floor.
Considering the installation of air conditioning ac ducts under the floor.
This size fits just between most floor joists.
For those considering the installation of ductwork under the floor as opposed to in attic space understanding the basics of air flow and the assets and limitations of your home are essential to design.
It eventually cascades down the stairwell to the first floor.
Make the second floor return vent duct bigger.
It often floats along in a layer near the floor.
My second floor is always hotter in the summer and cooler in the winter and i always have to turn the main floor thermostat way down in the summer to cool our bedrooms down and of course that makes the main floor and basement super cold.
You might also want to try adding a ceiling fan in.
Map out your duct path to upper floors before you.
If you stacked registers on a single duct on second and third floors for instance all the heat would go to the second floor.
Every ac installation is a custom job with a host of variables effecting best practices for each location.
Running a duct from the first floor to the second involves creating a hole in the main duct and attaching new duct work that terminates in a floor level heat register on the second floor.
Divide the house into two zones one for each floor.
For 1 the furnace fan running all day with the a c on might solve some milder heat trap problems for your second floor.
Add a small return vent duct to each room on the second floor.
However when the thermostat senses that the temperature on the main floor is the temperature your hvac system has been set for it will turn off the ac.
Area through this access hole.
Without this second floor return air system the heavy cool air being discharged from the supply ducts in each room can t do its job.
You could turn the ac down even more.
Hot air rises so the second floor is naturally going to be warmer.
The most common size duct used is 14 in.